Works great!

It does what it is supposed to. IYKYK. This makes assault rifles heavier and slows you down.

These were the gold standard of back up iron sights (BUIS) for a long while. They were recently replace with the mbus 3 from magpul. However they are still a nice reliable and dependable back up flip up sight. I used these for years and never had any issues with any of the ones i owned. Great value for the price, and would recommend these if you don't like the new model. They are nice and pretty thin so they lay flat under optics and dont stick up too much when folded down.

First of all... the delivery took over a month... what is acceptable due to the corona crisis.But what I dont understand is, when I buy an iron sight for 60,00€, that the mounting screw to fix it on the picatinny rail is missing! The package looked original and unopened, but the screw and counter washer just weren't there!Its no so much of a deal cause already got a screw and a washer outa my stash and mounted it... but for this price I expect all parts included- also because it shows on amazon with the mounting screw and also in the instructions!It would have been nice to have all parts of this sight originally from MAGPUL as thats what I paid for!

I love this sight to death. It's so tight to put on the rail I had to apply lube to the rail itself, tight tolerances are a good sign of quality manufacture. Feels solid, not flimsy or wobbly. Spring retention ensures that after each shot it returns to zero. Also, the square top of the sighting ring makes obtaining accurate aim faster. I have an A3 type rifle, and the standard A2 front sight with it's dog ears protecting the front sight blade: point directly to the squared edges of this rear sight's peep ring. Which actually makes acquiring the target seem easier and faster than if it were a perfect circle rear sight ring. Maybe it's psycho somatic where it's purely me, but it quite honestly seems faster on target than metallic orb rear peeps. the square top of the sight ring, purely objectively to me at least, seems to aid in my finding the center with the front sight blade because the dog ears protecting the blade have an extra frame of reference by branching off towards the square radii left and right of the rear peep.Could be my imagination: but I love this thing. It's solid, tight, retains zero, folds -REALLY- low (which is great) and what I like most: super light weight. I don't like quad rails and hanging off 5 pounds of junk on my rifles. I don't put anything on one of my rifles unless the added capability the accessory brings justifies the weight it brings. I like an Ar-15 carbine to be light and fast, transition target to target quickly.I wouldn't hesitate to put one of these on any pic rail that needs a backup rear. Be it a full fledged A3/A4 combat rifle or a $5k race gun that has to have a rear sight to qualify for a division or specific course of fire. Fits tight, holds zero and weighs next to nothing: you can't go wrong with one of these. I have -NOT- had hands on experience with the mbus II FRONT sight, only the rear: so I cannot offer an informed opinion about the mbus front sight. I can say with relative confidence, I have a high opinion of magpul products in general and if the front sight is of equal quality to their rear sight - I wouldn't hesitate to use that either. I cannot however, give first hand account of what the front sight is like. I can say that -MY- mbus II rear sight is terrific, and that it's my go to choice for any pici-rail gun platform that's in need of a backup rear.